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Research on the Effect of an Air-Blown Interrupting Gap to Reduce the Rate of Lightning Tripping

Author

Listed:
  • Hao Li

    (High Voltage Laboratory, Guangxi University, Nanning 530004, China)

  • Jufeng Wang

    (High Voltage Laboratory, Guangxi University, Nanning 530004, China)

  • Ping Huang

    (High Voltage Laboratory, Guangxi University, Nanning 530004, China)

  • Kezhu Guo

    (State Grid Tacheng Power Supply Company, Tacheng 830000, China)

  • Yanlei Wang

    (High Voltage Laboratory, Guangxi University, Nanning 530004, China)

Abstract

The air-blown interrupting gap protection method is a self-energy interrupting method based on the concept of suppressing arc building by frequency continuation. In order to verify the effect of an air-blown interrupting gap to reduce the rate of line lightning tripping, in this paper, the protection principle of the air-blown interrupter gap is first described, and the action process simulated by COMSOL Multiphysics simulation software. Next, a frequency renewal test circuit is built for the test. Then, an arc-building rate calculation model and a lightning trip rate calculation model under the condition of an air-blown interrupting gap are established, and, finally, a 10 kV overhead line in Yunnan is selected for the verification of the calculation example. The results show the following: a gas blowing arc gap can be effectively extinguished in about 2.5 ms frequency arc and with no re-ignition phenomenon. Before and after the installation of the gas blowing arc gap line, the arc rate changed from 37.27% to 4.1%, respectively, and the lightning trip rate changed from 8.64 times/(40 thunderstorm days—100 km) to 0.337 times/(40 thunderstorm days—100 km), respectively. The decline rate was more than 95%, and in actual operation, it reduced the lightning trip rate enough to achieve good results.

Suggested Citation

  • Hao Li & Jufeng Wang & Ping Huang & Kezhu Guo & Yanlei Wang, 2023. "Research on the Effect of an Air-Blown Interrupting Gap to Reduce the Rate of Lightning Tripping," Energies, MDPI, vol. 16(3), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1474-:d:1055393
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    References listed on IDEAS

    as
    1. Qiwen He & Jufeng Wang & Yang Lu & Yongfeng Song & Zhenghao Jia & Hao Li & Yanlei Wang & Yiyi Zhang, 2022. "Research on Energy Conversion in the Arc-Extinguishing Process of a Long-Gap Gas Lightning-Protection Device," Energies, MDPI, vol. 15(20), pages 1-14, October.
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